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Sure Flow Butterfly Valves
Specifications and Applications

Butterfly Valves make an excellent choice by combining the balance of an economical valve with the performance you expect in a Commercial, HVAC and an industrial butterfly valve.


All valves shall meet API-609 MSS-SP-67 ISO 5272 face-to-face dimensions. Valve sizes from 2" to 12" are rated at 200 psig WOG service and valve sizes from 14" to 30" are rated at 150 psig WOG service. All valves are full rated on dead-end service. All bodies shall be ductile iron 65-45-12 and bi-directional tested in both directions and be bubble tight with zero leakage. Lug bodies shall be full lug rated and all bodies shall be suitable for ANSI 125/150 lb, JIS, DIN or B.S. Flanges. Secondary seals shall be self-adjusting. All elastomers, all internal bearings shall be non-corrosive and non-metallic. All seats shall be suitable for 250°F sustained high temperature and capable of 2000 PPM on chlorinated applications.


All valves are factory tested on both sides for bi-directional installations to zero leakage and bubble tight.

Typical Applications:
  • On/off isolation
  • Dead-end service/removal of downstream piping
  • Heating, ventilation and air conditioning systems
  • Industrial process piping
  • Municipal raw water intake
  • Municipal chlorinated water systems (2000 ppm)
  • Municipal feed water and reservoir
  • Throttling and process control
  • Full vac
  • Aeration and blower installations
Features Benefits
Extended neckAllows for 2" insulation
Ductile iron bodyHigh strength body when in tension (lug body)
Non-corrosive bushingsElimination of shaft to body seizure
AWWA C504 latest revision proof of designHigh cyclic capabilities while maintaining a bubble tight seal
Cartridge seat Excellent on full vacuum distortion proof primary shaft seal,minimal seat movement and consistent displacement on closing
One-piece shaftHigh torsional capabilities with zero disc deflection

Food & Beverage
Water - HVAC
Chemical Plants

Pulp & Paper
Steel Mills

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